Carburetor arrangement for v-type air cooled engines



Oct. 10, 1950, J. RUZKEKA 2,525,374

CARBURETOR ARRANGEMENT FOR V-TYPE AIR COOLED ENGINES Filed Aug. 29, 1947Patented Get. 10, 1950 CARBURETOR ARRANGEMENT FOR V-TYPE AIR COOLEDENGINES Jaroslav Riiiika, Prague-Smichov, Czechoslo- Tatra, narodnipodnik,

vakia, assignor t Koprivnice Application August 29, 1947, Serial No.771,362 In Czechoslovakia January 2, 1939 Section 1, Public Law 690,August 8, 1946 Patent expires January 2, 1959 2 Claims.

In air-cooled engines with the cylinders arranged in V the carburetteris usually arranged in the space provided between the cylinders, sincethe sucked-in air may be distributed into the cylinders in the best andshortest way possible. A drawback of this arrangement consists in thatthe carburetter is situated just in the path of the hot air led awayfrom the cylinders. An arrangement, it is true, has already beenproposed in the form of a hollow slide valve whereby the air is directedinto the carburetter either from the cool external space or from thewarm space between the cylinders or from both spaces simultaneously in amixture of any desirable mixing ratio, but in spite of this arrangementeven in this case the drawbacks occur in consequence of the carburetterbeing excessively heated by the hot air itself. Engines of this type aresurrounded by a plate or similar jacket serving for directing the coolinair and distributing the whole space round the engine into a cold and awarm space. In the above mentioned arrangement serving for the admissionof hot air to the carburetter in any desired manner the carburetter isconnected to the cold space by a pipe, but in such manner, that theconnection with this space can be progressively closed and at the sametime the connection with the warm space can be opened, it being possibleto arrange an air filter in the inlet pipe.

The arrangement according to this invention for eliminating the drawbackof the necessity of arrangin the carburetter in a hot space, consists inthat the middle portion of the inlet hollow body is enlarged to form ahousing in such manner that the whole carburetter is arranged directlyin said enlarged portion in consequence of which the entire carburetteris exposed to a medium of such temperature which is most favourable forthe carburetter operation.

The accompanying drawing shows diagrammatically by way of exampleanembodiment of the object of the present invention.

The hot space is between the cylinders 2 and 3 and is limited by ajacket 4. Through this space I a hollow cylindrical body 5 extends andopens on both frontal extremities into the cool space 5 a widenedportion '5 being centrally arranged in the shape of a housing whereinthe carburetter 8 is supported. The ends of the body 5 are provided in awell known manner with apertures which co-operate with the apertures inthe jacket and the inner space of the body is filled out with slideshaving openings and serving for closing respectively opening theadmissions of cold or hot air respectively for preparing a suitable warmmixture filters 9 being preferably provided in a portion of the hollowbody 5. The body I having the shape of a housing is provided with acover It renderin possible the access to the carburetter.

I claim:

1. In an internal combustion engine having the cylinders arranged inV-forrnation, a jacket enclosing the cylinders and the hollow spacebetween the same, a hollow cylindrical body extending transverselythrough the jacket and communicating with both its ends with the coolerspace outside said jacket, a casing within said jacket and arrangedcentrally within the hollow space between said cylinders andcommunicating with the central portion of said hollow cylindrical body,and a carburetter arranged in said casing and adapted to be suppliedwith air from said cooler space through said hollow cylindrical body.

2. In an internal combustion engine having the cylinders arranged inV-formation, a jacket enclosing the cylinders and the hollow spacebetween the same, a hollow cylindrical body extending transverselythrough the jacket and communicating with both its ends with the coolerspace outside said jacket, a casing within said jacket and arrangedcentrally within the hollow space between said cylinders andcommunicating with the central portion of said hollow cylindrical body,a carburetter arranged in said casing and adapted to be supplied withair from said cooler space through said hollow cylindrical body, androtatable slide valves in the ends of said hollow cylindrical body forcontrolling the amount of air supplied to said carburetter.

JARosLAv RiiZrcKA.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

